EP1371890A1 - Pipeline system for the injection of fuels into blast furnaces or the like - Google Patents

Pipeline system for the injection of fuels into blast furnaces or the like Download PDF

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Publication number
EP1371890A1
EP1371890A1 EP03013145A EP03013145A EP1371890A1 EP 1371890 A1 EP1371890 A1 EP 1371890A1 EP 03013145 A EP03013145 A EP 03013145A EP 03013145 A EP03013145 A EP 03013145A EP 1371890 A1 EP1371890 A1 EP 1371890A1
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EP
European Patent Office
Prior art keywords
fuel
coupling
fuel hose
blast furnace
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03013145A
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German (de)
French (fr)
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EP1371890B1 (en
Inventor
Georg Springmann
Dieter Warmbier
Dirk Hasselbrink
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Georg Spingmann Industrie- und Bergbautechnik GmbH
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Georg Spingmann Industrie- und Bergbautechnik GmbH
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Publication of EP1371890A1 publication Critical patent/EP1371890A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/125—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting non-inflammable or heat-resistant hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • F27D2003/185—Conveying particles in a conduct using a fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Definitions

  • the invention relates to a piping system for Fuel injection in blast furnaces or the like.
  • the piping systems used here in practice usually include rubber hose lines, e.g. With a suitable soul, for example an EPDM soul, provided and e.g. by means of so-called cam-lock coupling elements to the fuel connection of the blast furnace as well as one or more fuel supply lines are connected.
  • a suitable soul for example an EPDM soul
  • Object of the present invention is therefore, a Piping system for fuel injection in blast furnaces or to provide the like, which has an improved temperature and having compressive strength.
  • a piping system for fuel injection in blast furnaces or the like a fuel hose line and provided at the end portions coupling elements for Connecting the fuel hose to a blast furnace fuel connection and at least one Fuel supply, the fuel hose line has a soul of natural gas resistant material and about their entire length with a circumferential Security mesh is provided, wherein the coupling elements designed as pressure-resistant quick coupling devices are, and being on the blast furnace Fuel connection facing side of the Fuel hose line a metallic sealing Non-return element for avoiding a gas backflow from the Blast furnace is provided.
  • the peripheral safety braid is preferably made Made of stainless steel, with an optimum Hose rupture protection is achieved, if any Coupling an extended socket for fixing and Welding the safety braid has.
  • each one is Coupling element downstream of at least one ball valve, so that the fuel supply through the piping system flexible according to the respective requirements can be adjusted.
  • the single figure comprises an inventive Pipe system a fuel hose 1 to Connection of one or more (shown in Embodiment two) fuel supply lines to a Fuel connection of a (not shown) Blast furnace.
  • the fuel hose 1 has a natural gas resistant soul and is over its entire length with a serving as a hose rupture protection (not shown) safety braid, preferably made Stainless steel, provided.
  • a first one Quick coupling device 3 is provided which one with the Fuel hose line 1 firmly connected male part coupling 4 and in this engageable female coupling 5 has and is designed as a pressure-resistant coupling to the most secure possible sealing of the fuel connection 2 reach into the fuel hose 1.
  • the Vaterteilkupplung 4 has on the Fuel hose 1 side facing a extended nozzle 4a for applying the Safety braid on.
  • the corresponding end portion of the safety braid on the extended nozzle 4a of the Vaterteilkupplung 4 means Auxiliary sleeves, preferably made of stainless steel, fixed and then welded.
  • the female part coupling 5 is on the fuel port 2 facing side to a non-return valve having, metallic sealing non-return element. 6 coupled, which prevents hot gases, which at a deflagration in the blast furnace due to the natural gas injection be generated via the piping system in the Can flow back fuel hose 1.
  • metallic sealing non-return element without rubber or Elastomer sealing elements is also at reflux of hot gases due to deflagration a secure sealing of the area of the Fuel hose 1 and the arranged thereon Ensures fittings by the non-return element 6.
  • a blast furnace Deflagration a melting, or burning Vulcanization of elastomer parts in the area of used used quick coupling devices.
  • the non-return element 6 is in turn in the direction of Fuel connection 2 by means of a screw-7, according to the illustrated embodiment of a Hexagon screwed connection, to a socket ball valve 8, according to the illustrated embodiment, a 2-way ball valve with full passage, connected.
  • a screw-7 according to the illustrated embodiment of a Hexagon screwed connection
  • a socket ball valve 8 according to the illustrated embodiment, a 2-way ball valve with full passage, connected.
  • Muff ball valve 8 is by means of another Screw 9 and a cap nut 10 to the Fuel connection 2 connected.
  • At the female coupling 13 is on the Fuel hose 1 side facing away from a tee 14th connected, whose two remaining connections under Interposition of each another socket ball valve 15 or 16 connected to two fuel supply lines 17 and 18 is, so that a fuel supply according to the respective requirements over one of the Fuel supply lines 17, 18 or both Fuel supply lines 17 and 18 can be made.

Abstract

Pipeline system comprises a fuel tubing line (1) and coupling elements (3, 11) provided on the end sections for connecting the fuel tubing line on a fuel connection (2) on the blast furnace side and on at least one fuel supply (15,16). The fuel tubing line has a core made from a material resistant to natural gas and is provided with a safety braiding on the peripheral side. The coupling elements are formed as quick coupling devices. A metallic sealed return stroke element (6) is provided on the side of the fuel tubing line facing the fuel connection to avoid a gas return stream from the blast furnace.

Description

Die Erfindung betrifft ein Rohrleitungssystem zur Brennstoffeinblasung in Hochöfen oder dergleichen.The invention relates to a piping system for Fuel injection in blast furnaces or the like.

Zur Herstellung von Roheisen in einem Hochofen ist es üblich, den Koksverbrauch durch Einblasung von weiteren kohlenstofftragenden, als Ersatzreduktionsmittel dienenden Brennstoffen wie beispielsweise Erdgas, Kokereigasen, Flüssiggas, Feinkohle oder Heizöl zu reduzieren.For the production of pig iron in a blast furnace it is customary the coke consumption by blowing in more carbon bearing, serving as a substitute reducing agent Fuels such as natural gas, coke oven gases, Liquefied gas, fine coal or fuel oil to reduce.

Die hierbei in der Praxis verwendeten Rohrleitungssysteme umfassen in der Regel Gummischlauchleitungen, die z.B. mit einer geeigneten Seele, beispielsweise einer EPDM-Seele, versehen und z.B. mittels sogenannter Cam-Lock-Kupplungselemente an den Brennstoffanschluss des Hochofens sowie an eine oder mehrere Brennstoffzufuhrleitungen angeschlossen sind.The piping systems used here in practice usually include rubber hose lines, e.g. With a suitable soul, for example an EPDM soul, provided and e.g. by means of so-called cam-lock coupling elements to the fuel connection of the blast furnace as well as one or more fuel supply lines are connected.

Die bekannten Rohrleitungssysteme sind beim Einsatz zur Brennstoffeinblasung in Hochöfen jedoch in mehrfacher Hinsicht nachteilig:

  • Infolge der verwendeten Dichtelemente kann bei den mit hoher Temperatur und hohem Druck eingeblasenen Erdgasen ein Verschmoren der Dichtungselemente und damit eine Undichtigkeit des Rohrleitungssystems auftreten;
  • In der Schlauchleitung selbst besteht insbesondere beim Einsatz zur Erdgaseinblasung die Gefahr von Schlauchbrüchen;
  • Die Gefahr von Verschmorungen der Dichtungselemente und und/oder von Schlauchbrüchen wird durch Rückströmungen heißer Gase, die bei einer Verpuffung auftreten können, noch erhöht.
However, the known piping systems are disadvantageous when used for fuel injection in blast furnaces in several respects:
  • As a result of the sealing elements used in the natural gas injected at high temperature and high pressure, a burning of the sealing elements and thus a leakage of the piping system occur;
  • In the hose line itself, in particular when used for natural gas injection there is a risk of hose breaks;
  • The risk of scorching the sealing elements and / or hose breaks is still increased by backflow of hot gases, which may occur in a deflagration.

Aufgabe der vorliegenden Erfindung ist es daher, ein Rohrleitungssystem zur Brennstoffeinblasung in Hochöfen oder dergleichen zu schaffen, welches eine verbesserte Temperatur- und Druckfestigkeit aufweist.Object of the present invention is therefore, a Piping system for fuel injection in blast furnaces or to provide the like, which has an improved temperature and having compressive strength.

Diese Aufgabe wird gemäß den Merkmalen des unabhängigen Anspruchs 1 gelöst.This object is achieved according to the characteristics of the independent Claim 1 solved.

Hierzu weist ein Rohrleitungssystem zur Brennstoffeinblasung in Hochöfen oder dergleichen eine Brennstoffschlauchleitung und an deren Endabschnitten vorgesehene Kupplungselemente zum Anschluß der Brennstoffschlauchleitung an einen hochofenseitigen Brennstoffanschluß und an wenigstens eine Brennstoffzufuhr auf, wobei die Brennstoffschlauchleitung eine Seele aus erdgasbeständigem Material aufweist und über ihre gesamte Länge mit einem umfangsseitigen Sicherheitsgeflecht versehen ist, wobei die Kupplungselemente als drucksichere Schnellkupplungseinrichtungen ausgebildet sind, und wobei auf der dem hochofenseitigen Brennstoffanschluß zugewandten Seite der Brennstoffschlauchleitung ein metallisch dichtendes Rückschlagelement zum Vermeiden eines Gasrückstroms aus dem Hochofen vorgesehen ist.For this purpose, a piping system for fuel injection in blast furnaces or the like, a fuel hose line and provided at the end portions coupling elements for Connecting the fuel hose to a blast furnace fuel connection and at least one Fuel supply, the fuel hose line has a soul of natural gas resistant material and about their entire length with a circumferential Security mesh is provided, wherein the coupling elements designed as pressure-resistant quick coupling devices are, and being on the blast furnace Fuel connection facing side of the Fuel hose line a metallic sealing Non-return element for avoiding a gas backflow from the Blast furnace is provided.

Dadurch, daß auf der dem hochofenseitigen Brennstoffanschluß zugewandten Seite der Brennstoffschlauchleitung ein metallisch dichtendes Rückschlagelement vorgesehen ist, wird ein Gasrückstrom aus dem Hochofen infolge einer im Hochofen auftretenden Verpuffung in den Bereich der Brennstoffschlauchleitungen sowie der daran angeordneten Armaturen wirksam verhindert. Da das Rückschlagelement metallisch dichtend ist, kann kein Verschmoren, Aufschmelzen oder Nachvulkanisieren von Elastomerteilen auftreten, so dass die Dichtwirkung des Rückschlagelements auch bei Erdgaseinblasung bei hohen Temperaturen sowie bei einer im Hochofen auftretenden Verpuffung erhalten bleibt.Characterized in that on the high furnace side fuel connection facing side of the fuel hose a Metallic sealing check element is provided is a backflow of gas from the blast furnace due to a blast furnace occurring deflagration in the area of Fuel hose lines and arranged thereon Faucets effectively prevented. Because the non-return element Metallic sealing, can not burn, melting or post vulcanizing of elastomeric parts occur, so that the sealing effect of the non-return element also at Natural gas injection at high temperatures and at a Blast furnace occurring deflagration is maintained.

Weitere, etwa in den Schnellkupplungseinrichtungen vorgesehene Dichtelemente aus Gummi oder Elastomeren werden bedingt durch die Vorschaltung des metallisch dichtenden Rückschlagelements wirksam vor einem Verschmoren, Aufschmelzen oder Nachvulkanisieren geschützt, so dass die Temperaturfestigkeit des Rohrleitungssystems wesentlich erhöht wird.Further, about in the quick coupling devices intended sealing elements made of rubber or elastomers due to the upstream of the metallic sealing Non-return element effective against scorching, Melted or re-vulcanized, so that the Temperature resistance of the piping system essential is increased.

Infolge der Seele aus erdgasbeständigem Material und des umfangsseitigen Sicherheitsgeflechts wird eine optimale Temperaturbeständigkeit des erfindungsgemäßen Rohrleitungssystems erreicht, wobei gleichzeitig infolge der Verwendung drucksicherer Schnellkupplungseinrichtungen, wie beispielsweise WE-ER-Kupplungen der Fa. Weinhold, eine erhöhte Druckfestigkeit bei zudem einfacher und schneller Handhabung erzielt wird, da die verwendeten Schnellkupplungseinrichtungen gegenüber den bekannten Systemen verwendeten Cam-Lock-Kupplungselementen wesentlich höheren Drücken standhalten können.As a result of the soul of natural gas resistant material and the circumferential safety braid will be optimal Temperature resistance of the invention Piping system achieved, at the same time due to the Use of pressure-safe quick-coupling devices, such as For example, WE-ER couplings from. Weinhold, a increased pressure resistance in addition easier and faster Handling is achieved because the used Quick coupling devices over the known Systems used cam-lock coupling elements significantly can withstand higher pressures.

Das umfangsseitige Sicherheitsgeflecht ist vorzugsweise aus Edelstahl hergestellt, wobei eine optimale Schlauchbruchsicherung erreicht wird, wenn jedes Kupplungselement einen verlängerten Stutzen zum Fixieren und Aufschweißen des Sicherheitsgeflechts aufweist. The peripheral safety braid is preferably made Made of stainless steel, with an optimum Hose rupture protection is achieved, if any Coupling an extended socket for fixing and Welding the safety braid has.

Gemäß einer weiteren bevorzugten Ausführungsform ist jedem Kupplungselement wenigstens ein Kugelhahn nachgeschaltet, so daß die Brennstoffzufuhr über das Rohrleitungssystem entsprechend den jeweiligen Anforderungen flexibel eingestellt werden kann.According to another preferred embodiment, each one is Coupling element downstream of at least one ball valve, so that the fuel supply through the piping system flexible according to the respective requirements can be adjusted.

Weitere Ausgestaltungen der Erfindung sind der Beschreibung und den Unteransprüchen zu entnehmen.Further embodiments of the invention are the description and to refer to the dependent claims.

Die Erfindung wird nachstehend anhand eines in der beigefügten Abbildung dargestellten Ausführungsbeispiels näher erläutert.The invention will be described below with reference to one in the attached illustration shown embodiment explained in more detail.

Gemäß der einzigen Figur umfasst ein erfindungsgemäßes Rohrleitungssystem eine Brennstoffschlauchleitung 1 zum Anschluß von einer oder mehrerer (im dargestellten Ausführungsbeispiel zwei) Brennstoffzufuhrleitungen an einen Brennstoffanschluß einer (nicht dargestellten) Hochofenanlage. Die Brennstoffschlauchleitung 1 weist eine erdgasbeständige Seele auf und ist über ihre gesamte Länge mit einem als Schlauchbruchsicherung dienenden (nicht dargestellten) Sicherheitsgeflecht, vorzugsweise aus Edelstahl, versehen.According to the single figure comprises an inventive Pipe system a fuel hose 1 to Connection of one or more (shown in Embodiment two) fuel supply lines to a Fuel connection of a (not shown) Blast furnace. The fuel hose 1 has a natural gas resistant soul and is over its entire length with a serving as a hose rupture protection (not shown) safety braid, preferably made Stainless steel, provided.

An dem dem hochofenseitigen Brennstoffanschluß 2 zugewandten Endabschnitt der Brennstoffschlauchleitung 1 ist eine erste Schnellkupplungseinrichtung 3 vorgesehen, welche eine mit der Brennstoffschlauchleitung 1 fest verbundene Vaterteilkupplung 4 und eine in diese einkuppelbare Mutterteilkupplung 5 aufweist und als drucksichere Kupplung ausgebildet ist, um ein möglichst sicheres Eindichten des Brennstoffanschlusses 2 in die Brennstoffschlauchleitung 1 zu erreichen. Die Vaterteilkupplung 4 weist auf der der Brennstoffschlauchleitung 1 zugewandten Seite einen verlängerten Stutzen 4a zum Aufbringen des Sicherheitsgeflechts auf. Hierbei wird vorzugsweise der entsprechende Endabschnitt des Sicherheitsgeflechts auf dem verlängerten Stutzen 4a der Vaterteilkupplung 4 mittels Hilfshülsen, vorzugsweise aus Edelstahl, fixiert und anschließend verschweißt.At the furnace-side fuel port 2 facing End portion of the fuel hose 1 is a first one Quick coupling device 3 is provided which one with the Fuel hose line 1 firmly connected male part coupling 4 and in this engageable female coupling 5 has and is designed as a pressure-resistant coupling to the most secure possible sealing of the fuel connection 2 reach into the fuel hose 1. The Vaterteilkupplung 4 has on the Fuel hose 1 side facing a extended nozzle 4a for applying the Safety braid on. In this case, preferably the corresponding end portion of the safety braid on the extended nozzle 4a of the Vaterteilkupplung 4 means Auxiliary sleeves, preferably made of stainless steel, fixed and then welded.

Die Mutterteilkupplung 5 ist auf der dem Brennstoffanschluss 2 zugewandten Seite an ein eine Rückschlagklappe aufweisendes, metallisch dichtendes Rückschlagelement 6 angekuppelt, welches verhindert, daß heiße Gase, die bei einer Verpuffung im Hochofen infolge der Erdgaseinblasung über das Rohrleitungssystem erzeugt werden, in die Brennstoffschlauchleitung 1 zurückströmen können. Infolge der Ausbildung des Rückschlagelements 6 als allein metallisch dichtendes Rückschlagelement ohne Gummi- oder Elastomerdichtungselemente ist auch bei Rückstrom heißer Gase infolge Verpuffung ein sicheres Abdichten des Bereichs der Brennstoffschlauchleitung 1 und der daran angeordneten Armaturen durch das Rückschlagelement 6 gewährleistet. Insbesondere wird auch bei einer im Hochofen auftretenden Verpuffung ein Aufschmelzen, Verschmoren oder Nachvulkanisieren von Elastomerteilen im Bereich der verwendeten Schnellkupplungseinrichtungen verhindert.The female part coupling 5 is on the fuel port 2 facing side to a non-return valve having, metallic sealing non-return element. 6 coupled, which prevents hot gases, which at a deflagration in the blast furnace due to the natural gas injection be generated via the piping system in the Can flow back fuel hose 1. As a result of Training the check element 6 as alone metallic sealing non-return element without rubber or Elastomer sealing elements is also at reflux of hot gases due to deflagration a secure sealing of the area of the Fuel hose 1 and the arranged thereon Ensures fittings by the non-return element 6. In particular, also occurring in a blast furnace Deflagration a melting, or burning Vulcanization of elastomer parts in the area of used used quick coupling devices.

Das Rückschlagelement 6 ist wiederum in Richtung zum Brennstoffanschluss 2 mittels eines Einschraubelementes 7, gemäß dem dargestellten Ausführungsbeispiel einer Sechskanteinschraubverschraubung, an einen Muffenkugelhahn 8, gemäß dem dargestellten Ausführungsbeispiel einen 2-Wege-Kugelhahn mit vollem Durchgang, angeschlossen. Der Muffenkugelhahn 8 ist mittels eines weiteren Einschraubelements 9 sowie einer Überwurfmutter 10 an den Brennstoffanschluss 2 angeschlossen.The non-return element 6 is in turn in the direction of Fuel connection 2 by means of a screw-7, according to the illustrated embodiment of a Hexagon screwed connection, to a socket ball valve 8, according to the illustrated embodiment, a 2-way ball valve with full passage, connected. Of the Muff ball valve 8 is by means of another Screw 9 and a cap nut 10 to the Fuel connection 2 connected.

Auf der dem Brennstoffanschluss 2 abgewandten Seite der Brennstoffschlauchleitung 1 ist eine weitere Schnellkupplungseinrichtung 11 angebracht, welche eine mit der Brennstoffschlauchleitung 1 fest verbundene Vaterteilkupplung 12 und eine in diese einkuppelbare Mutterteilkupplung 13 aufweist. Die Vaterteilkupplung 12 weist, ebenso wie die Vaterteilkupplung 4, auf der der Brennstoffschlauchleitung 1 zugewandten Seite einen verlängerten Stutzen 12a zum Fixieren des Sicherheitsgeflechts und anschließendem Verschweißen auf.On the fuel connection 2 side facing away from the Fuel hose 1 is another Quick coupling device 11 attached, which with a the fuel hose 1 firmly connected Vaterteilkupplung 12 and one in this einkuppelbare Mother coupling 13 has. The male part coupling 12 has, as well as the Vaterteilkupplung 4, on the Fuel hose 1 side facing a extended nozzle 12a for fixing the Safety braid and subsequent welding on.

An die Mutterteilkupplung 13 ist auf der der Brennstoffschlauchleitung 1 abgewandten Seite ein T-Stück 14 angeschlossen, dessen beide verbleibende Anschlüsse unter Zwischenschaltung je eines weiteren Muffenkugelhahns 15 bzw. 16 an zwei Brennstoffzufuhrleitungen 17 und 18 angeschlossen ist, so dass eine Brennstoffzufuhr entsprechend den jeweiligen Anforderungen über eine der Brennstoffzufuhrleitungen 17, 18 oder über beide Brennstoffzufuhrleitungen 17 und 18 erfolgen kann.At the female coupling 13 is on the Fuel hose 1 side facing away from a tee 14th connected, whose two remaining connections under Interposition of each another socket ball valve 15 or 16 connected to two fuel supply lines 17 and 18 is, so that a fuel supply according to the respective requirements over one of the Fuel supply lines 17, 18 or both Fuel supply lines 17 and 18 can be made.

Zusammenfassend wird bei dem erfindungsgemäßen Rohrleitungssystem bedingt durch die Vorschaltung des metallisch dichtenden Rückschlagelements 6 ein Eintreten heißer Gase infolge Verpuffung in den Bereich der Brennstoffschlauchleitung 1 und der daran vorgesehenen Armaturen wirksam verhindert, wobei insbesondere an den Schnellkupplungseinrichtungen 3 und 11 vorgesehene Dichtungselemente aus Gummi oder Elastomer wirksam vor einem Aufschmelzen, Verschmoren oder Nachvulkanisieren geschützt sind. Ferner wird infolge der Seele der Brennstoffschlauchleitung 1 aus erdgasbeständigem Material und des umfangsseitigen Sicherheitsgeflechts eine optimale Temperaturbeständigkeit des erfindungsgemäßen Rohrleitungssystems erreicht, wobei gleichzeitig infolge der Verwendung drucksicherer Schnellkupplungseinrichtungen 3, 11 eine erhöhte Druckfestigkeit bei zudem einfacher und schneller Handhabung erzielt wird. Insgesamt weist das erfindungsgemäße Rohrleitungssystem somit eine verbesserte Temperatur- und Druckfestigkeit auf. In summary, in the inventive Piping system due to the upstream of the metallically sealing non-return element 6 an entry hot gases due to deflagration in the area of Fuel hose 1 and the provided thereon Faucets effectively prevented, in particular to the Quick coupling devices 3 and 11 provided Rubber or elastomeric sealing elements effective before Melted, flocked or vulcanized are. Further, as a result of the soul of Fuel hose 1 of natural gas resistant material and the circumferential safety braid optimal Temperature resistance of the invention Piping system achieved, at the same time due to the Use of pressure-safe quick-coupling devices 3, 11 an increased pressure resistance in addition easier and faster handling is achieved. Overall, the Pipe system according to the invention thus an improved Temperature and pressure resistance on.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
BrennstoffschlauchleitungFuel pipeline
22
Brennstoffanschlussfuel connection
33
erste Schnellkupplungseinrichtungfirst quick coupling device
44
VaterteilkupplungMale part coupling
4a4a
StutzenSupport
55
MutterteilkupplungFemale part coupling
66
Rückschlagelementchecking member
77
Einschraubelementscrew-in
88th
MuffenkugelhahnBall valve
99
Einschraubelementscrew-in
1010
ÜberwurfmutterNut
1111
zweite Schnellkupplungseinrichtungsecond quick coupling device
1212
VaterteilkupplungMale part coupling
12a12a
StutzenSupport
1313
MutterteilkupplungFemale part coupling
1414
T-StückTee
1515
MuffenkugelhahnBall valve
1616
MuffenkugelhahnBall valve
1717
erste Brennstoffzufuhrleitungfirst fuel supply line
1818
zweite Brennstoffzufuhrleitungsecond fuel supply line

Claims (4)

Rohrleitungssystem zur Brennstoffeinblasung in Hochöfen oder dergleichen, mit einer Brennstoffschlauchleitung (1) und an deren Endabschnitten vorgesehenen Kupplungselementen (3, 11) zum Anschluß der Brennstoffschlauchleitung (1) an einen hochofenseitigen Brennstoffanschluß (2) und an wenigstens eine Brennstoffzufuhr (15, 16), wobei die Brennstoffschlauchleitung (2) eine Seele aus erdgasbeständigem Material aufweist und über ihre gesamte Länge mit einem umfangsseitigen Sicherheitsgeflecht versehen ist, wobei die Kupplungselemente (3, 11) als drucksichere Schnellkupplungseinrichtungen ausgebildet sind, und wobei auf der dem hochofenseitigen Brennstoffanschluß (2) zugewandten Seite der Brennstoffschlauchleitung (1) ein metallisch dichtendes Rückschlagelement (6) zum Vermeiden eines Gasrückstroms aus dem Hochofen vorgesehen ist.Piping system for fuel injection in blast furnaces or the like, with a fuel hose line (1) and at their end sections Coupling elements (3, 11) for connecting the Fuel hose line (1) to a high furnace side Fuel connection (2) and at least one Fuel supply (15, 16), wherein the Fuel hose (2) a soul out has gas-resistant material and on their entire length with a circumferential Security mesh is provided, the Coupling elements (3, 11) as pressure-resistant Quick coupling devices are formed, and wherein on the furnace side fuel connection (2) facing side of the fuel hose line (1) a metallic sealing non-return element (6) for Avoiding gas backflow from the blast furnace is provided. Rohrleitungssystem nach Anspruch 1 , wobei das Sicherheitsgeflecht aus Edelstahl hergestellt ist.Pipe system according to claim 1, wherein the Safety braid is made of stainless steel. Rohrleitungssystem nach Anspruch 1 oder 2, wobei jedes Kupplungselement (3, 11) einen verlängerten Stutzen (4a, 12a) zum Fixieren und Aufschweißen des Sicherheitsgeflechts aufweist.Pipe system according to claim 1 or 2, wherein each Coupling element (3, 11) an extended nozzle (4a, 12a) for fixing and welding of the Safety braid has. Rohrleitungssystem nach einem der Ansprüche 1 bis 3, wobei jedem Kupplungselement (3, 11) wenigstens ein Kugelhahn (8, 15, 16) nachgeschaltet ist.Pipe system according to one of claims 1 to 3, wherein each coupling element (3, 11) at least one Ball valve (8, 15, 16) is connected downstream.
EP03013145A 2002-06-12 2003-06-11 Pipeline system for the injection of fuels into blast furnaces or the like Expired - Lifetime EP1371890B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20209161U 2002-06-12
DE20209161U DE20209161U1 (en) 2002-06-12 2002-06-12 Pipe system for fuel injection in blast furnaces or the like.

Publications (2)

Publication Number Publication Date
EP1371890A1 true EP1371890A1 (en) 2003-12-17
EP1371890B1 EP1371890B1 (en) 2006-09-20

Family

ID=29285784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03013145A Expired - Lifetime EP1371890B1 (en) 2002-06-12 2003-06-11 Pipeline system for the injection of fuels into blast furnaces or the like

Country Status (3)

Country Link
EP (1) EP1371890B1 (en)
AT (1) ATE340327T1 (en)
DE (2) DE20209161U1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231073B (en) * 1959-11-14 1966-12-22 Continental Gummi Werke Ag Fireproof hose line
DE4041936C1 (en) * 1990-12-27 1992-09-24 Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De
DE4310159A1 (en) * 1992-03-30 1993-10-07 Tokai Rubber Ind Ltd Fuel transport hose for automobile - comprises inner layer of fluorine-contg. resin, intermediate layer of synthetic resin and outer rubber layer, producing resistance to acidic petrol, flame and abrasion
EP0622465A1 (en) * 1993-04-26 1994-11-02 Stahlwerke Bremen GmbH Method for producing metal from metal ores
DE4315175A1 (en) * 1993-05-07 1994-11-10 Rasmussen Gmbh Flexible pipe
DE4446001A1 (en) * 1994-10-25 1996-05-02 Immanuel Jeschke Flexible gas pipeline for buildings
US5544868A (en) * 1995-07-31 1996-08-13 National Steel Corporation Blow pipe and gas lance for blast furance

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626501A (en) * 1968-03-18 1971-12-07 Atlantic Richfield Co Apparatus for injecting fluid fuel into a blast furnace
GB1584151A (en) * 1976-04-15 1981-02-04 Vredestein Nv Highpressure filament reinforced hose having integral filament-bound couplings and method of making same
DE4109203C2 (en) * 1991-03-21 2000-01-20 Linde Ag Device unit for a dust supply on a pneumatic basis
US5333650A (en) * 1993-03-17 1994-08-02 Flexon Industries Corporation Hose coupling with a stiffening sleeve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231073B (en) * 1959-11-14 1966-12-22 Continental Gummi Werke Ag Fireproof hose line
DE4041936C1 (en) * 1990-12-27 1992-09-24 Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De
DE4310159A1 (en) * 1992-03-30 1993-10-07 Tokai Rubber Ind Ltd Fuel transport hose for automobile - comprises inner layer of fluorine-contg. resin, intermediate layer of synthetic resin and outer rubber layer, producing resistance to acidic petrol, flame and abrasion
EP0622465A1 (en) * 1993-04-26 1994-11-02 Stahlwerke Bremen GmbH Method for producing metal from metal ores
DE4315175A1 (en) * 1993-05-07 1994-11-10 Rasmussen Gmbh Flexible pipe
DE4446001A1 (en) * 1994-10-25 1996-05-02 Immanuel Jeschke Flexible gas pipeline for buildings
US5544868A (en) * 1995-07-31 1996-08-13 National Steel Corporation Blow pipe and gas lance for blast furance

Also Published As

Publication number Publication date
ATE340327T1 (en) 2006-10-15
DE20209161U1 (en) 2003-10-23
DE50305088D1 (en) 2006-11-02
EP1371890B1 (en) 2006-09-20

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